125387634266249 has 2 divisors, whose sum is σ = 125387634266250. Its totient is φ = 125387634266248.

The previous prime is 125387634266203. The next prime is 125387634266287. The reversal of 125387634266249 is 942662436783521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125371465363600 + 16168902649 = 11196940^2 + 127157^2 .

It is a cyclic number.

It is not a de Polignac number, because 125387634266249 - 2³² = 125383339298953 is a prime.

It is not a weakly prime, because it can be changed into another prime (125387634265249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62693817133124 + 62693817133125.

It is an arithmetic number, because the mean of its divisors is an integer number (62693817133125).

Almost surely, 2^{125387634266249} is an apocalyptic number.

It is an amenable number.

125387634266249 is a deficient number, since it is larger than the sum of its proper divisors (1).

125387634266249 is an equidigital number, since it uses as much as digits as its factorization.

125387634266249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 627056640, while the sum is 68.

The spelling of 125387634266249 in words is "one hundred twenty-five trillion, three hundred eighty-seven billion, six hundred thirty-four million, two hundred sixty-six thousand, two hundred forty-nine".